Shutter-worker



(No Model.) 7

O. R. WELLS 8v B. K. LEWIS. SHUTTER WORKER.

No. 449,508. Patented Mar. 31,1891.

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UNITED STATES PATENT FFICE Cl'lARLES R. XVELLS AND BENJAMIN K. LEYVIS, OF LYNN, MASSACHUSETTS.

SHUTTER-WORKER.

SPECIFICATION forming part of Letters Patent No. 449,508, dated March 31, 1891.

Application filed April 29, 1890. Serial No. 349,886. (No model.)

To all zu/wnv it may (Jo/worm:-

Be it known that we, CHARLES R. \VELLS and BENJAMIN K. LEWIS, both of Lynn,in the county of Essex and Commonwealth of Massachusetts, have invented certain Improvements in Mechanism for Opening and Closing Shutters, of which the following, taken in connection with the accompanying drawings, is a specification.

This invention relates to mechanism for opening and closing shutters, and the nature thereof is fully described, and then specifically claimed hereinafter.

In the accompanying drawings, Figure 1 is an elevation showing one side of a building with a system of shutters and our improved shutter-operating mechanism combined. Fig. 2 is a plan View of the cam for operating one of a pair of shutters. Fig. 3 isa similar view of a cam-link employed in operating the other member of a pair of shutters. Fig. 4 is a detail plan.

It will be understood that modern buildings are quite commonly provided with shutters to, composed of iron or surface covered with sheet-iron or other non-combustible material. Said shutters are mounted on pivots or hinges secured to the building in position, so that the shutters may be closed over the windows or other openings of the building to exclude fire from entering said openings, and to permit light to enter the shutters are opened and swung back on their hinges to expose the opening.

It is necessary during business hours to have the shutters opened that light may enter, and it is required to close the shutters when business is suspended and the building is to be abandoned for the night. It often occurs that some shutter or pair of shutters is omitted by accident or other cause, and not being closed lire readily enters through the opening thus exposed. Sometimes it happens that fire originates while the shutters are open and is undiscovered until the heat there- 01' becomes so great as to render it impossible to close the shutters.

It is the object of this invention to provide a mechanism whereby a system or series of shutters may be opened and closed all at one time. To this end the shutters Cb are supported to turn on hinges or pivots suitably connected with the building in the usual and customary manner. Each shutter supports a movable bolt 6, the bolt being movable longitudinally against the tension of a spring. (Not shown.) Beneath the shutters is a bar A, which is supported in bearings so as to permit longitudinal reciprocating movements. The bar is extended throughout the series or system of shutters,and on the bar cam-slides 12 are mounted. On the slides 12, respectively,

is set a camf, designed to operate one member of each pair of shutters, to which end it is provided with a camgroove to receive the bolt 6 of the shutter, as shown in Fig. 2.

It will be observed that the two members composing a pair of shutters open and close by obverse movements, and while the cams f operate one member of each pair of shutters a mechanism is required to give an obverse movement to the other member of each pair of shutters. To that end we employ a link-cam. (Shown in Fig. 3.)

On the bar A are slides 14, to which, respectively, are pivoted the cams 10 by a suitable pin h, so as to permit horizontal swinging movement. Said link-cams 10 receive the respective bolts 6 of the shutters, as in Fig. 1, and a pin m, mounted on an arm 18, extends into the cam-slot between the bolt 6 and pin 71 as shown, and serves as a fulcrum for the link-cam to turn on. The arm 18 is preferably a spring to avoid cramping of parts.

The slides 12 and 14; are provided with grooves 16, through which a pin projecting from the bar A operates to limit the sliding movement of the slides. These slides are employed only when some of the shutters, will not permit of the extreme movement required 0 of bar A, as hereinafter described, for operating other shutters in the system, as forcxaur ple, when a shutter moves backward against some obstacle that opposes its movement through a complete half-circle, or in case two members swinging backward interlock each other and stop, standing outwardly from the building. In such cases the slides traveling on barA permit the desired movements of bar A. The movements of said slides are de- Ico termined by slots 16, so as to divide the movement of bar A between the slides and its respective shutter.

All shutters that are operated through the full movement of bar A may be operated by the cams herein described attached to the bar without slides 12 and 14:. Each pair of shutters being connected to the cams by bolts 6, as stated,it is only necessary to move the bar A in one direction longitudinally for the purpose of opening the shutters and in the opposite direction longitudinally for the purpose of closing the shutters. The reciproeating movements of bar A may be effected by hand or a leverage mechanism, if preferred.

In the accompanying drawings two lines of shutters are represented occupying different horizontal planes and operated by the two bars A A. Said bars are connected with a rod or link 5, the connections being effected through bell-crank leversG 6 and links 7 7, as shown. The levers G 6 are supported by pins 9, which are journaled in the wall of the buildin g, and one of said pins, as shown in the present instance, is extended through the wall and supports a lever 11, by which the operator manipulates the shutter-operatin g mechanism. A movement of the lever ll in one direction turns the pin 9 and its bell-crank lever, moving directly one bar A and indirectlyi. 6., through red 5, lever (S, and link 7, the other bar A, and swings the shutters open. A counter movement of the lever 11 effects an obverse movement of the operating mechanism and swings the shutters closed. Obviously any number of shutters may be operated by a single bar, as A, if the shutters are in one horizontal plane, or by a series of bars connected as described, if in different horizontal planes. \Ve have preferred to make the bolts 6 movable longitudinally, to the end that they may be lifted out of their cams, respectively, to disengage the shutter from the operating mechanism whenever occasion requires.

We claim 1. In combination, the pair of shutters, a bar A for operating the members of the pair simultaneously in opposite directions, the fixed cam, and pivoted cams on the bar A, substantially as described.

2. In combination, the series of shutters, a bar A sliding longitudinally for operating said shutters, and the cams for operating the shutters from the bar, said cams being carried by supports 12, arranged to slide on the bar A, substantially as described.

3. In combination, the two series of shutters located in different horizontal planes, a bar A for each series with cam connections to the shutters, and the operating connections, as 5, 6, and 7, between the bars A of the two series, whereby the operating of one bar will move the other simultaneously, substantially as described.

A. In combination, the shutter, the sliding bar A, the pivoted cam 10, carried thereby and engaging with the shutter-bolt, and pin on for moving the cam on its pivot, substantially as described.

Signed at Lynn this 5th day of March, A. D. 1890.

CHARLES R. WELLS. BENJ. K. LEWIS. Witnesses:

C. B. TUTTLE, F. W. PAGE. 

